Choke attachment for shotguns



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F. X. SCHUSTER.

CHOKE ATTACHMENT FOR SHOTGUNS.

APPLICATION mm uic. l0. Isla.

1,348,750. Patented Aug. 3,1920.

FRANCIS XAVIER SCHUSTER., OF RABER, MICHIGAN.

CHKE ATTACHMENT FOB BHOTGUNS.

Bpooloatlon of Letters ratent.

' Patented Aug. 3, 1920.

Application tiled December 19, 1918. `Bei-al No. 267,528.

To all whom zt may concern.'

Beit known that I, FRANCIS Xavma Scnus'ri-zn, a citizen of the United States, residing at Raber in the county of.Chip pewa and State of, Michigan,have invented new and useful Improvements in Choke Attachments for Shotguns, of which the following is a specification.

This invention has reference enerally to improvements in that class o inventions known as fire arms, and more particularly relates to a choke attachment for shot ins.

It is the primary aim and object o the present invention to provide a device of the above mentioned character designed to be attached to' the outer end of a arrel of a shot gun and adjusted so as to adapt the shot un to different ran es when the same is being used, ,enabling t e userto quickly and conveniently vary the range of the gun, when desired. It is an equally important object of the present invention to provide a device of the above mentioned character wherein the outer end of the barrel is designed so that the bore thereof will b e varied. upon the adjustment of the choke, in the present instance -in the form of a sleeve.

Moreparticularly this invention con. templates ythe provision of a device of the above mentioned character wherein both the bore of the barrel and the bore of the choke are bored when the choke is airanged in its innermost and outermost positions for assurin of the proper directing of the shot on the ring of the gun.

It is an additional object of this invention to provide a device of the above mentioned character which is simple in construction, thorou hly reliable and eicient in its purpose an inexpensive in manufacure. Other objects will be in art obvious in art hereinafter set fort he invention accordin ly consists in the features 4of construction, t e combination of elements and the arrangement of parts, which will be exemplified in the construction hereinafter described and the scope of the application of which will be indicated in the appended claim.

The invention is clearly illustrated in the accompanying drawings, in which t. Figure 1 is a side e evation of the inven .and

Fig. 2 is a longitudinal sectional view thereof.

Fig. 3 i's an end elevational view looking toward the outer end of the barrel with the choke detached.

Fig. 4 is a lon itudinal section of the muzzle end of the barrel equiped' with the choke device, and with a modi ed means for adusting the choke.

tiniilar characters of reference are einplo'yed in all of the above described views, to indicate corresponding parts.

Referring now, more particularl to the accompanying drawings there is iliiistrated a shot gun ofthe conventional form, including generally a barrel 1 supported on the fore-stock 2, the forward end of'which is formed with an linwardly extendin threaded recess 3 for a presently appear, while a ustably mounted on the other end of the arrel is an improved choke attachment generally indicated by the numeral 4.-

In reducing the present feature of the invention .to practice, the outer surface of the barrel near the outer end is 'gradually tapered toward the outer end as indicated at 5, while the outer portion of the barrel'is rovided with opposed pairs of slits' 6, as indicatedJlforI ermittinf' the contraction of the muzzle an 'of the barrel, as will herenafter become apparent. The choke in the present instance is in the form of a sleeve i, the inner surface of which is gradually tapered/'from the outer end to the inner end, as indicated by the numeral 8 and corresponds to the inclination or tapered portion 5 of the barrel.A In assembling the parte, that is, telescoping the sleeve on he tapered outer portion of the barrel, it is desirable that the sleeve and the barrel b e bored when the sleeve is in the position indicated in Fig. 2 and when it is positioned forwardly or beyond the outer end of the barrel for insuring of the proper directing of the shot at the time the gun is fired. In this connection it is to be observed that when the sleeve is moved to the innermost position, as indicated in Fig. 1, the slits 6 will permit of the contractin of the bore by the sleeve for insuring o the maintainance of the snot in a compact or close formation when projected from the barrel upon the firing of the gun, whereas when the sleeve is adjusted forwardly of the barrel, the

(T (purpose that will shot will be scattered. In the former position the gun is best adapted for long range shooting, whereas when the choke is Aextended to the forward position, the gun can be conveniently and *effectively used for short range shooting.

With a view toward providing the im` proved means for manual] adjusting the sleeve, an ear 9 is forme integral with, and near the lowermost point of, the sleeve and swiveled therein is a head 10 which in turn is formed on one end of an adjustin rod 11, the inner end of which is threadeA as at 12 and received or accommodated within the'threaded recess 3 in the forestock 2. A knurled wheel 13 is carried by this rod and of course facilitates ad'ustment of the rod to correspondingl a ju'st the sleeve, as is a parent. It is2 o course to be understood t at the barrel 1s equi pad with a sight 14, for facilitating the ring of the gun'.

It is believed in view of the foregoing description that a further detailed description of the operation of the invention is entirely unnecessary. Likewise it is believed that the advantages of the invention will be readily apparent.

What 1s claimed is The combination with a gun barrel the outer diameter o'f which ad'acent the muv.- zle end is gradually reduce to form a forward] extending taper, the barrel being rovi ed with longitudinally arranged slitsl 1n this ta ered portion, of a correspondingly shaped seeve telescoped over the tapered end and formed with an ear, an adjusting rod formed with a reduced portion passing loosely through! the said ear and having a head abutting the ear on one side and the shoulder abutting the ear on the other side, a threaded socket fixed with reference to the stock andreceiving the other end of. the said rod which is correspondingly threaded, and manually operable means for rotating the rod whereby relative longitudinal movement between the barrel and the sleeve is eiected tor the purpose s ecified.

In testimony whereof aflixmy signature.

FRANCIS XAVIER s'cHUsTER. 

